<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
        }

        .d {
            width: 1000px;
            height: 240px;
            margin: auto;
            background-color: #ff0;
        }

        .d1 {
            width: 500px;
            height: 240px;
            float: left;
            background-color: #ddd;
        }

        /* 后代选择器  --- 子孙后代 */
        .d h3 {
            line-height: 64px;
            margin-top: 12px;
            margin-left: 22px;
        }

        .d1 li {
            line-height: 24px;
            font-size: 12px;
        }

        .d1 li span {
            float: right;
            margin-right: 27px;
            color: #999;
        }

        .d2 {
            width: 240px;
            height: 240px;
            float: left;
            background-color: #666;
        }

        /* .d2 h3 {
            line-height: 64px;
            margin-top: 12px;
            margin-left: 22px;
        } */

        .d3 {
            width: 260px;
            height: 240px;
            float: left;
            background-color: #999;
        }


        /* .d1{}
        .d .d1{} */
    </style>
</head>

<body>

    <div class="d">
        <div class="d1">
            <h3>公司新闻</h3>
            <ul>
                <li>少时诵诗书所所所 <span>2222-22-11-11</span></li>
                <li>少时诵诗书所所所 <span>2222-22-11-11</span></li>
                <li>少时诵诗书所所所 <span>2222-22-11-11</span></li>
                <li>少时诵诗书所所所 <span>2222-22-11-11</span></li>
                <li>少时诵诗书所所所 <span>2222-22-11-11</span></li>
            </ul>
        </div>
        <div class="d2">
            <h3>公司新闻</h3>
        </div>
        <div class="d3">
            <h3>公司新闻</h3>
        </div>
    </div>

</body>

</html>